Narrow-band enhanced absorption of monolayer graphene at near-infrared (NIR) sandwiched by dual gratings

被引：0
作者：
Gaige Zheng
Haojing Zhang
Lingbing Bu
机构：
[1] Nanjing University of Information Science & Technology,School of Physics and Optoelectronic Engineering
[2] Nanjing University of Information Science & Technology,Jiangsu Collaborative Innovation Center on Atmospheric Environment and Equipment Technology (CICAEET)
[3] Nanjing University of Information Science and Technology,Key Laboratory of Meteorological Disaster of Ministry of Education
来源：
Plasmonics | 2017年 / 12卷
关键词：
Monolayer graphene; Light absorption; Near-infrared; Rigorous coupled-wave analysis;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
One possibility of enhancing light absorption in monolayer graphene at near-infrared (NIR) wavelength region with grating structures is proposed and investigated. It is demonstrated that it is possible to achieve near-perfect absorption when a single monolayer graphene is sandwiched between two gratings with optimized geometric parameters at normal incidence for transverse electric (TE) polarization. By means of the rigorous coupled-wave analysis (RCWA), the effects of technological tolerances on the optical response of the structure by varying geometric parameters and incident angle are studied. The proposed photonic structure could be efficiently exploited as a building block for innovative optical absorbers or photodetectors in combination with active materials.
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页码：271 / 276
页数：5
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